Alarm-lock.



A. SGHOENMAN. ALARM LOCK.

APPLICATION FILED MAB-15'. 1906.

PATENTED' JUNE 19, 1906- I U ITED STATES Specification of Letters Patent.

7 Application filed'March 15.1905. Serial No. 250,176.

FATENT OFFICE.

ARNOLD SOHOENMAN, or NEW YORK, N. Y.

ALARM-LOCK- Patented Juneie, 1906.

To alt whom it may concern:

Be it known that I, ARNOLD SoHoENMAN, a subject of the King of Roumania, and a resident of New York, borough of Brooklyn, in the county of Kings and State of New York,

- have invented certain new and useful 1 mprovements in Alarm-Locks, of which the following is a specification.

My invention relates to alarm-locks. It has for its object to provide a tumblerlock adapted to be operated from the outsideby a key and from the inside by a knob and having abell adapted to be sounded by the operation of the bolt in either direction.

It has for a further object to provide a device of the character set forth embodying advantages in point of perfect operation, simlock, the bell being removed to show the belloperating mechanism. Fig. 3 is an edge view of the entire lock. Fig. 4 is an elevation of one of the tumblers. Fig. 5 is a detail view of the cross-bar and operating-shaft.

In all the figures of the drawings illustrating my inventlon like reference characters indicate corresponding parts.

Referring to the drawings, 1 designates the key-plate, which is provided with holes for the insertion of screws to secure the lock in place, and 2 the lock-casing, which is provided with lugs adapted to engage holes in the key-plate and having their ends smashed down to secure said parts together.

The tumbler-plates 3 are placed against one another within the casing of the lock and are slidably held therein between laterally- I projecting lugs 4, formed integrally with said casing. Each tumbler-plate is rovided in its edge 5 adjacent the key-r0 6 with a curved recess 7, adapted to be engaged bya stepped key 8. Near its opposite edge 9 said plate is provided with an elongated recess 10,

opening through its edge 11. The edge 12 of the tumbler-plate bordering the recess is provided with notches 13, 14, and 15, and the edge 16 of the tumbler-plate is provided with notches 17, 18, and 19. Located 0 posite to the other notches and interme iate the recess 10 and the edge 5 said plate is provided with a hole 20. The ed e 21 of the tumbler-plate bordering the hole is provided with a curved recess 22, and the edge 23 of the tumbler-plate is provided with a curved recess 24 opposite the other recess.

The cross-bar25, which is secured on the inner endof a rotatable shaft 26, has a body portion 27, located within the hole and adapted to engage the edges of the tumblers within the recess 24, and laterally-projecting portion 28, bearing on the outside tumblers. The outer end of the shaft 26 projects through a hub 29 on the lock-casing and has a knob 30 secured thereon for turning said shaft by hand. A plate 31' is mounted to oscillate on the hub 29 and has an upwardly-projecting nose 32 and laterally-projecting arms 33 and 34, having rearwardly-projecting lugs 35 and 36, respectively, engaging laterally-proj ecting arms 37 and 38 on a plate 39, mounted to reciprocate on the hub 29, said plate having a downwardly-projecting portion 40, provided with a hole engaged by a rearwardly-projecting lug 41 on an arm 42, ivoted on a stud 44, and a leaf-spring 45, w ich serves as a bell-clapper, has one end secured to the stud 44 and the other end in engagement with the lug 41, said. spring serving to normally hold the plate 39 in its lower position. The bell 46 is mounted on the inner end of the shaft 26 between the inner end of the hub 29 and knob 30 and is adapted to be sounded by the ball 47 striking it as a result of the reciprocation of the spring through the me dium of the reciprocatory plate 39.

The bolt 48 is slidably mounted in recesses 49 and 50 in the lock-casing and has a rearwardly-projecting pin 50, which extends through the elongated recesses 10 in the tumblers and an elongated recess 51 in the lockcasing and has a plate 52 secured thereon, provided with downwardly-projecting portions 53 and 54, adapted when the bolt 48 is moved in either direction to engage the nose 32 and oscillate the plate 31, thereby causing the lugs 35 and 36 to alternately slide the plate 39 up, said plate being lowered by. the spring 45.

The bolt 48 is provided with two notches 48 and 48 in its edge 48 opposite the recess 7 in the tumbler plates, said notches adapted to be engaged by the key 8, and with a hole 48 provided with notches 48 and 48 in its ed 'e opposite the recess 22 in the edge of the tum lers, said notches adapted to be engaged by the ends 28 of the cross-bar.

One end of a leaf-spring 55 bears against the edges 9 of all the tumbler-plates adjacent the elongated recess 10 and holds the tumbler plates so that the notches in a plurality of said plates are normally out of registry with the notches in the rest of the tumbler-plates, thereby locking the pin projecting into the elongated recess 10 and notches and the bolt carrying said pin, and the other end of the leaf-spring bears against the projecting edges 16 of the tumbler-plates bordering the elongated recess 10 and aids the other end of the leaf-spring in returning all of the tumblerplates to their normal position, so that the notches will be out of registry.

The key-shaft 6 projects through the keyhole 57 in the key-plate 1 and into a keyguide 58 on said plate.

To slide the bolt to full-unlocked position from the outside, the key is inserted into the keyhole and turned around twice. In turning the key the first time it bears against the edges of the tumblers within the recesses 7, moving said tumblers in, so that their notches register, and the elongated recesses therein register with the elongated recess in the lockcasing, thereby freeing the pin on the bolt, and finally engages the first notch in the bolt, sliding it to half-unlocked position and by means of the pin thereon operates the bell, and the. pin is then locked by the notches in the tumblers as they slide back, and in turning the key the second time the operation is the same, and the bell is rung a second time.

To slide the bolt to full-unlocked position from the inside, the knob is turned around twice. In turning the knob the first time the crossbar bears against the edges of the tumblers within the recess 24, moving said tumblers in, so that their notches register, and the elongated recesses therein register with the elongated recess in the lock-casing, thereby freeing the pin on the bolt, and finally engages the first notch in the bolt, sliding it to half-unlocked position and by means of the pin thereon operates the bell, and the pin is then locked by the notches in the tumblers as they slide back, and in turning the knob the second time the operation is the same, and the bell is rung a second time.

I do not wish to be understood as limiting myself to the precise detail and arrangement of parts shown and described, but reserve the right to all modifications within the scope of my invention.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an alarm-lock, the combination of a bell having a clapper, a reciprocal bolt, re-

ciprocal tumbler-plates adapted to hold said bolt in locked or unlocked position, means from the front of the lock for operating said tumblers and bolt and sounding said bell, means from the rear of the lock for operating said tumblers and sounding said boll, said last-mentioned means embodying a rotatable shaft having a cross-bar engaging said tumblers and bolt, a plate mounted to be oscillatod on said rotatable shaft by the boltand a plate mounted to be reeiprocated on said rotatable shaft by said oscillatory plate to operate said bell-clapper, substantially as described.

2. In an alarm-lock, the combination of a bell having a clapper, a reciprocal bolt, bodily concurrently slidable tumbler-plates adapted to hold said bolt in locked or unlocked position, means from the front of the lock for operating said tumblersand bolt and sounding said bell, means from the rear of the lock for operating said tumblers and bolt and sounding said bell, said last-mentioned means embodying a rotatable shaft having a crossbar engaging said tumblers and bolt, a plate mounted to be oscillated on said rotatable shaft by the bolt and a plate mounted to be reciprocated on said rotatable shaft by said oscillatory plate to operate said 1 e l-clapper, substantially as described.

3. In an alarm-lock, the combination of a bell having a clapper, a reciprocal bolt having a pin provided with a plate, bodily'concurrently slidable tumbler-plates adapted to hold said bolt in locked or unlocked position, means from the front of the lock for operating said tumblers and bolt and sounding said bell, means from the rear of the lock for operating said tumblers and bolt and sounding said bell, said last-mentioned means embodying a rotatable shaft having a cross-bar engaging said tumblers and bolt, a plate mounted to oscillate on said rotatable shaft and having lugs and a nose adapted to be en gaged by the plate carried by the bolt, :1 plate mounted to reciprocate on said rotatable shaft and having arms adapted. to be engaged by lugs of the oscillatory plate, and a pivoted arm having a lug extending through the reciprocatory plate and securing the bellclapper thereto, substantially as described.

Signed at New York, in the county of New York and State of New York, this 8th day of March, A. D. 1905.

ARNOLD SCI-IOENMAN.

l/Vitnesses:

CHAS. L. WOLF, ALBERT B. BLACKWOOD. 

